一、引言

距离上次写javaweb系列已经过去快两三个月了，由于时间冲突和任务紧急程度原因没来得及弄完，这次补上。本文使用了springMVC+spring+mybatis框架，在前面学习springmvc和mybatis的基础上整合了spring框架，并使用到项目中。这需要我们有一些spring的基本了解，比如控制反转、依赖注入等概念==

二、整体思路

主要是在web.xml中配置前端控制器和一些其他的注入配置，上图把层级关系列的很清晰了==

三、代码

文件目录结构图如下（源码下载地址点击打开链接）：

1、src文件

com.xcy.po中User类：

package com.xcy.po;public class User {private int F_ID;private String F_CODE;private String F_PW;public int getF_ID() {return F_ID;}public void setF_ID(int f_ID) {F_ID = f_ID;}public String getF_CODD() {return F_CODE;}public void setF_CODE(String f_CODE) {F_CODE = f_CODE;}public String getF_PW() {return F_PW;}public void setF_PW(String f_PW) {F_PW = f_PW;}@Overridepublic String toString() {return "Bike [F_ID=" + F_ID + ", F_CODD=" + F_CODE + ", F_PW=" + F_PW + "]";}}

com.xcy.mapper中UserMapper接口

package com.xcy.mapper;import com.xcy.po.User;public interface UserMapper {public User findUser (int id) throws Exception;
}

com.xcy.mapper中UserMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.xcy.mapper.UserMapper"><select id="findUser" parameterType="int" resultType="com.xcy.po.User">select * from T_BIKE where F_ID = #{id}</select>
</mapper>

com.xcy.service中UserService：

package com.xcy.service;import com.xcy.po.User;public interface UserService {public User findUser (int i) throws Exception;
}

com.xcy.service中UserServiceImpl

package com.xcy.service;import org.springframework.beans.factory.annotation.Autowired;import com.xcy.mapper.UserMapper;
import com.xcy.po.User;public class UserServiceImpl  implements UserService{@Autowiredprivate UserMapper userMapper;@Overridepublic User findUser(int i) throws Exception {// TODO Auto-generated method stubreturn userMapper.findUser(i);}}

com.xcy.controller中UserController

package com.xcy.controller;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;import com.xcy.po.User;
import com.xcy.service.UserServiceImpl;import sun.launcher.resources.launcher;@Controller
public class UserController {
@Autowired
private UserServiceImpl userServiceImpl;@RequestMapping("/getUser")@ResponseBodypublic User  getUser() throws Exception {User user=userServiceImpl.findUser(1);return user;}
}

2、配置文件

web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xmlns="http://xmlns.jcp.org/xml/ns/javaee"  xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"  id="WebApp_ID" version="3.1">  <display-name>Yellowbike</display-name>  <!-- 加载spring容器 -->
<listener><listener-class> org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param><param-name>contextConfigLocation</param-name><param-value>WEB-INF/classes/spring/applicationContext-*.xml</param-value>
</context-param>
<!--springmvc前端控制器  --><servlet>  <servlet-name>spring</servlet-name>  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  <init-param>  <param-name>contextConfigLocation</param-name>  <param-value>classpath:spring/springmvc.xml</param-value>  </init-param>  <load-on-startup>1</load-on-startup>  </servlet>  <servlet-mapping>  <servlet-name>spring</servlet-name>  <url-pattern>/</url-pattern>  </servlet-mapping>
</web-app>

springmvc.xml，配置前端控制器

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"  xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"  xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"  xsi:schemaLocation="http://www.springframework.org/schema/beans  http://www.springframework.org/schema/beans/spring-beans-4.0.xsd  http://www.springframework.org/schema/context   http://www.springframework.org/schema/context/spring-context-4.0.xsd  http://www.springframework.org/schema/aop   http://www.springframework.org/schema/aop/spring-aop-4.0.xsd  http://www.springframework.org/schema/tx   http://www.springframework.org/schema/tx/spring-tx-4.0.xsd  http://www.springframework.org/schema/mvc   http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd  http://www.springframework.org/schema/context   http://www.springframework.org/schema/context/spring-context-4.0.xsd">  <!-- <bean name="/getName" class="com.xcy.controller.UserController"></bean>   <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"></bean>   <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean>   <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"></bean> -->  <!--配置handler -->  <context:component-scan base-package="com.xcy.controller"></context:component-scan>  <!--加载handlermapping和handleradapter -->  <mvc:annotation-driven></mvc:annotation-driven>  <bean  class="org.springframework.web.servlet.view.InternalResourceViewResolver">  <property name="prefix" value="/WEB-INF/jsp/"></property>  <property name="suffix" value=".jsp"></property>  </bean>
</beans>

applicationContext-dao.xml，其中引用了sqlMapConfig配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans  http://www.springframework.org/schema/beans/spring-beans-4.0.xsd  http://www.springframework.org/schema/context   http://www.springframework.org/schema/context/spring-context-4.0.xsd  http://www.springframework.org/schema/aop   http://www.springframework.org/schema/aop/spring-aop-4.0.xsd  http://www.springframework.org/schema/tx   http://www.springframework.org/schema/tx/spring-tx-4.0.xsd  http://www.springframework.org/schema/mvc   http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd  http://www.springframework.org/schema/context   http://www.springframework.org/schema/context/spring-context-4.0.xsd"><!--加载配置文件 --><context:property-placeholder location="classpath:db.properties" /><!--dbcp数据源 --><bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"destroy-method="close"><property name="driverClassName" value="${jdbc.driver}" /><property name="url" value="${jdbc.url}" /><property name="username" value="${jdbc.username}" /><property name="password" value="${jdbc.password}" /><!--maxActive: 最大连接数量 --><property name="maxActive" value="150" /><!--maxIdle: 最大空闲连接 --><property name="maxIdle" value="20" /></bean><!-- 注入sqlsessionfactory --><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><property name="configLocation" value="classpath:mybatis/sqlMapConfig.xml" /><property name="dataSource" ref="dataSource" /></bean><!-- 配置mapperfactoryBean -->
<!--     <bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean"><property name="mapperInterface" value="com.xcy.mapper.UserMapper" /><property name="sqlSessionFactory" ref="sqlSessionFactory" /></bean> --><!--mapper扫描，扫出mapper接口，自动注入spring  --><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><property name="basePackage" value="com.xcy.mapper"/><property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/></bean>
</beans>

sqlMapConfig.xml，其中可以配置setting，alias，扫描mapper（applicationContext-dao中已配置可以免去），这里没有配置啥==

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"  "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>  <!-- setting -->
<!-- alias -->
<!--可以不需要配置，mybatis—spring扫描  -->
<!--     <mappers>  <package name="com.xcy.mapper"/>  </mappers>  -->
</configuration>

applicationContext-service.xml，注入service实现类

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans  http://www.springframework.org/schema/beans/spring-beans-4.0.xsd  http://www.springframework.org/schema/context   http://www.springframework.org/schema/context/spring-context-4.0.xsd  http://www.springframework.org/schema/aop   http://www.springframework.org/schema/aop/spring-aop-4.0.xsd  http://www.springframework.org/schema/tx   http://www.springframework.org/schema/tx/spring-tx-4.0.xsd  http://www.springframework.org/schema/mvc   http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd  http://www.springframework.org/schema/context   http://www.springframework.org/schema/context/spring-context-4.0.xsd"><bean id="userServiceImpl" class="com.xcy.service.UserServiceImpl"></bean>
</beans>

applicationContext-transaction.xml，可以配置数据库事务控制，aop，这里没有配置==

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans  http://www.springframework.org/schema/beans/spring-beans-4.0.xsd  http://www.springframework.org/schema/context   http://www.springframework.org/schema/context/spring-context-4.0.xsd  http://www.springframework.org/schema/aop   http://www.springframework.org/schema/aop/spring-aop-4.0.xsd  http://www.springframework.org/schema/tx   http://www.springframework.org/schema/tx/spring-tx-4.0.xsd  http://www.springframework.org/schema/mvc   http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd  http://www.springframework.org/schema/context   http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<!-- 事务管理器
spring的jdbc控制类
-->
<!-- <bean id="" class=""></bean>--></beans>

其他：db.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/yellowbike
jdbc.username=root
jdbc.password=1234

log4j.properties

 ### \u8BBE\u7F6E###
log4j.rootLogger = debug,stdout,D,E### \u8F93\u51FA\u4FE1\u606F\u5230\u63A7\u5236\u62AC ###
log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target = System.out
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n

四、总结

主要目的；

springMVC与mybatis整合整体思路；

代码实例；

以后对事务控制和spring要进一步了解；

下载链接：点击打开链接

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